I'd imagine they're looking to trade De Aza and/or Viciedo to make room for Garcia, assuming they want him back in the majors. If there are no takers I would love a platoon, with Garcia taking over RF (maybe LF when Tank plays).
I'm worried about him re-injuring himself though, and ruining his career. I suppose the Sox doctors know better than me, but still. One of the highlights of the next couple seasons for me is watching Garcia grow.